CH675499A5 - - Google Patents
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- Publication number
- CH675499A5 CH675499A5 CH34/81A CH3481A CH675499A5 CH 675499 A5 CH675499 A5 CH 675499A5 CH 34/81 A CH34/81 A CH 34/81A CH 3481 A CH3481 A CH 3481A CH 675499 A5 CH675499 A5 CH 675499A5
- Authority
- CH
- Switzerland
- Prior art keywords
- information
- modulation
- track
- signal
- areas
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24079—Width or depth
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8000121A NL8000121A (nl) | 1980-01-09 | 1980-01-09 | Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager. |
Publications (1)
Publication Number | Publication Date |
---|---|
CH675499A5 true CH675499A5 (ja) | 1990-09-28 |
Family
ID=19834642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH34/81A CH675499A5 (ja) | 1980-01-09 | 1981-01-06 |
Country Status (23)
Country | Link |
---|---|
US (2) | US4972401A (ja) |
JP (1) | JPS56105343A (ja) |
AR (1) | AR232053A1 (ja) |
AT (1) | AT369916B (ja) |
AU (1) | AU542656B2 (ja) |
BE (1) | BE886992A (ja) |
BR (1) | BR8100042A (ja) |
CA (1) | CA1157945A (ja) |
CH (1) | CH675499A5 (ja) |
DD (2) | DD160624A5 (ja) |
DE (2) | DE3153674C2 (ja) |
DK (1) | DK151420C (ja) |
ES (1) | ES8201756A1 (ja) |
FR (1) | FR2473769B1 (ja) |
GB (1) | GB2069219B (ja) |
HK (1) | HK47984A (ja) |
IT (1) | IT1210972B (ja) |
MX (1) | MX150987A (ja) |
NL (1) | NL8000121A (ja) |
NZ (1) | NZ195974A (ja) |
SE (1) | SE447768B (ja) |
SG (1) | SG10684G (ja) |
ZA (1) | ZA807999B (ja) |
Families Citing this family (109)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8103117A (nl) * | 1981-06-29 | 1983-01-17 | Philips Nv | Inrichting voor het beschrijven en/of uitlezen van een registratiedrager. |
NL8000121A (nl) * | 1980-01-09 | 1981-08-03 | Philips Nv | Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager. |
NL8006165A (nl) * | 1980-11-12 | 1982-06-01 | Philips Nv | Systeem voor het overdragen van digitale informatie, codeerinrichting voor toepassing in dat systeem, decodeerinrichting voor toepassing in dat systeem en registratiedrager voor toepassing in dat systeem. |
US5119363A (en) * | 1980-12-17 | 1992-06-02 | Matsushita Electric Industrial Company, Ltd. | Optical disk having an index mark |
FR2504301A1 (fr) * | 1981-04-15 | 1982-10-22 | Thomson Csf | Support d'informations mobile et dispositif d'enregistrement-lecture comprenant un tel support |
NL8102621A (nl) * | 1981-05-29 | 1982-12-16 | Philips Nv | Inrichting voor het beschrijven en/of uitlezen van een registratiedrager. |
NL8201411A (nl) * | 1982-04-02 | 1983-11-01 | Philips Nv | Werkwijze voor het optekenen van een digitaal informatiesignaal op een registratiedrager met een stralingsgevoelige informatielaag, een inrichting hiervoor en een optische registratiedrager voorzien van een dergelijk digitaal informatiesignaal. |
US4417330A (en) * | 1981-10-15 | 1983-11-22 | Burroughs Corporation | Optical memory system providing improved focusing control |
FR2523348A1 (fr) * | 1982-03-12 | 1983-09-16 | Thomson Csf | Procede et dispositif de regeneration de phase de signaux de synchronisation dans un appareil optique d'ecriture-lecture de support d'information |
JPS5911551A (ja) * | 1982-07-12 | 1984-01-21 | Toshiba Corp | 光学式情報記憶媒体 |
NL8203618A (nl) * | 1982-09-20 | 1984-04-16 | Philips Nv | Inrichting voor het uitlezen van een registratiedrager. |
FR2567673B1 (fr) * | 1984-07-10 | 1986-11-07 | Thomson Alcatel Gigadisc | Support d'information inscriptible optiquement selon une piste definie par des motifs de pregravure et dispositif optique de suivi de piste mettant en oeuvre un tel support |
NL8500152A (nl) * | 1985-01-22 | 1986-08-18 | Philips Nv | Registratiedragerlichaam voorzien van vooraf aangebrachte en optisch detekteerbare servospoorgedeelten en sektoradressen. |
NL8500153A (nl) * | 1985-01-22 | 1986-08-18 | Philips Nv | Registratiedragerlichaam voorzien van een reliefstruktuur van optisch detekteerbare servospoorgedeelten en sektoradressen en inrichting voor het aanbrengen van deze struktuur. |
JPH0721892B2 (ja) * | 1985-02-14 | 1995-03-08 | 日本電気株式会社 | 光磁気記録方法 |
JPH0721895B2 (ja) * | 1985-02-19 | 1995-03-08 | 日本電気株式会社 | 光磁気記録方法 |
JPH0721896B2 (ja) * | 1985-02-19 | 1995-03-08 | 日本電気株式会社 | 光磁気記録方法 |
JPH0721894B2 (ja) * | 1985-02-19 | 1995-03-08 | 日本電気株式会社 | 光磁気記録方法 |
JPH0721893B2 (ja) * | 1985-02-19 | 1995-03-08 | 日本電気株式会社 | 光磁気記録方法 |
JPS61248250A (ja) * | 1985-04-26 | 1986-11-05 | Pioneer Electronic Corp | 円盤状記録媒体の製造方法 |
US4879707A (en) * | 1985-07-30 | 1989-11-07 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems specific track formats using discontinuities |
US4879708A (en) * | 1985-07-30 | 1989-11-07 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems specific track formats using wobbled pits |
CA1257391A (en) * | 1985-07-30 | 1989-07-11 | Kurt W. Getreuer | Optical disk tracking and seeking systems and specific track formats (servo areas) |
US4959823A (en) * | 1985-07-30 | 1990-09-25 | Laser Magnetic Storage International Company | Tracking and seeking system for use with an optical record carrier having a wobbled track format |
NL8602504A (nl) * | 1986-10-06 | 1988-05-02 | Philips Nv | Optisch uitleesbare registratiedrager voor het optekenen van informatie, een inrichting voor het vervaardigen van een dergelijke registratiedrager, een inrichting voor het optekenen van informatie op een dergelijke registratiedrager, alsmede een inrichting voor het uitlezen van op een dergelijke registratiedrager opgetekende informatie. |
NL8700655A (nl) * | 1986-10-06 | 1988-05-02 | Philips Nv | Optisch uitleesbare registratiedrager voor het optekenen van informatie, een werkwijze en een inrichting voor het vervaardigen van een dergelijke registratiedrager, een inrichting voor het optekenen van informatie op een dergelijke registratiedrager, alsmede een inrichting voor het uitlezen van op een dergelijke registratiedrager opgetekende informatie. |
US5339301A (en) * | 1986-10-06 | 1994-08-16 | U.S. Philips Corporation | Optically readable record carrier for recording information, method and apparatus for manufacturing such, apparatus for recording and reading information on a such a record carrier |
NL8701632A (nl) * | 1987-07-10 | 1989-02-01 | Philips Nv | Systeem voor het optekenen en/of uitlezen van een informatiesignaal, een registratiedrager, een opteken en/of uitleesinrichting voor toepassing in een dergelijk systeem, en een inrichting en werkwijze voor het vervaardigen van een dergelijke registratiedrager. |
JPH01141436A (ja) * | 1987-11-27 | 1989-06-02 | Sony Corp | フレーム同期化方法 |
NL8702904A (nl) * | 1987-12-03 | 1989-07-03 | Philips Nv | Werkwijze en inrichting voor het optekenen van informatie op een registratiedrager, alsmede een inrichting voor het lezen van de opgetekende informatie. |
US5031166A (en) * | 1988-01-25 | 1991-07-09 | Laser Magnetic Storage International Company | Optical disk tracking and seeking systems and specific track formats using discontinuities and circuitry therefor |
NL8800255A (nl) * | 1988-02-03 | 1989-09-01 | Philips Nv | Optische registratiedrager. |
EP0336706B1 (en) * | 1988-04-07 | 1994-07-06 | Hitachi Maxell Ltd. | Disk drive apparatus |
US5185732A (en) * | 1988-06-20 | 1993-02-09 | Sony Corporation | Recording medium and recording and reproducing apparatus employing the recording medium |
NL8901142A (nl) * | 1989-05-08 | 1990-12-03 | Philips Nv | Inrichting voor het uitlezen van een op een registratiedrager aangebracht informatiepatroon, alsmede een signaalverwerkingsschakeling voor toepassing in een dergelijke inrichting. |
DE3923330A1 (de) * | 1989-07-14 | 1991-01-24 | Thomson Brandt Gmbh | Optische abtastvorrichtung |
CA2054880C (en) † | 1990-11-09 | 1997-07-08 | Shigemi Maeda | Information recording and reproducing device |
US5204848A (en) * | 1991-06-17 | 1993-04-20 | International Business Machines Corporation | Adjusting amplitude detection threshold by feeding back timing-data phase errors |
DE4345525C2 (de) * | 1992-09-29 | 2002-11-07 | Pioneer Electronic Corp | Optische Disk und Vorrichtung zu deren Wiedergabe |
DE4345507C2 (de) * | 1992-09-29 | 2003-01-30 | Pioneer Electronic Corp | Optische Disk und Vorrichtung zu deren Wiedergabe |
US5835478A (en) * | 1995-06-15 | 1998-11-10 | Sony Corporation | Optical disc having address information for recording and reproducing data at correct positions |
JPH09237421A (ja) * | 1996-03-01 | 1997-09-09 | Sony Corp | 記録再生装置および方法 |
JP2856390B2 (ja) * | 1996-07-26 | 1999-02-10 | 株式会社日立製作所 | 情報記録媒体及びそれを用いた記録再生方法 |
US5809006A (en) * | 1996-05-31 | 1998-09-15 | Cagent Technologies, Inc. | Optical disk with copy protection, and apparatus and method for recording and reproducing same |
JPH1074321A (ja) * | 1996-07-05 | 1998-03-17 | Sharp Corp | 光ディスク基板及びその製造方法並びに光ディスク及びその再生方法 |
JPH1069640A (ja) * | 1996-08-27 | 1998-03-10 | Mitsumi Electric Co Ltd | Cd−rドライブにおけるウォブル信号生成方法 |
EP0858655B1 (en) * | 1996-09-03 | 2003-05-07 | Koninklijke Philips Electronics N.V. | Information carrier, reading/writing device and reading device for writing and/or reading information blocks |
US6052358A (en) * | 1996-10-04 | 2000-04-18 | Sony Corporation | Head feeding mechanism and optical pick-up feeding mechanism |
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JPH10320773A (ja) * | 1997-05-19 | 1998-12-04 | Sony Corp | 光ディスクの製造方法、光ディスク及び光ディスク装置 |
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US7701836B2 (en) | 2001-11-27 | 2010-04-20 | Hewlett-Packard Development Company, L.P. | Re-writable optical disk having reference clock information permanently formed on the disk |
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CZ20021290A3 (cs) * | 2000-08-14 | 2002-07-17 | Koninklijke Philips Electronics N. V. | Způsob a zařízení pro generování binárního signálu s předem určeným tvarem spektra, primární binární signál a záznamové nosné médium |
US6728182B2 (en) | 2001-01-25 | 2004-04-27 | Dphi Acquisitions, Inc. | Tracking and focus servo system with a media type boundary crossing detector |
US6970410B2 (en) * | 2001-01-25 | 2005-11-29 | Dphi Acquisitions, Inc. | Focus detection in a digital focus servo system |
US6956797B2 (en) * | 2001-01-25 | 2005-10-18 | Dphi Acquisitions, Inc. | Digital servo system with error signal integrity testing |
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US6813226B2 (en) | 2001-01-25 | 2004-11-02 | Dphi Acquisitions, Inc. | Calibration of a focus sum threshold in a focus servo system |
US6909676B2 (en) * | 2001-01-25 | 2005-06-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with track zero crossing detection |
US6891781B2 (en) * | 2001-01-25 | 2005-05-10 | Dphi Acquisitions, Inc. | Digital servo system with second order compensator |
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US6847596B2 (en) | 2001-01-25 | 2005-01-25 | Dphi Acquisitions, Inc. | Tracking servo system including a multi-track seek algorithm with a track zero crossing period integrity test |
US6906985B2 (en) | 2001-01-25 | 2005-06-14 | Dphi Acquisitions, Inc. | Calibration of tracking error signal gain in a tracking servo system |
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US7196979B2 (en) | 2001-01-25 | 2007-03-27 | Dphi Acquisitions, Inc. | Calibration storage methods for a digital focus and tracking servo system with calibration |
US7492675B2 (en) * | 2001-01-25 | 2009-02-17 | Dphi Acquisitions, Inc. | Digital servo system with calibrated notch filters |
US7672199B2 (en) | 2001-01-25 | 2010-03-02 | Dphi Acquisitions, Inc. | Close focus algorithm in a digital focus servo system |
US6965547B2 (en) * | 2001-01-25 | 2005-11-15 | Dphi Acquisitions, Inc. | Tracking and focus servo system with error signal inverse non-linearity calibration |
US6891789B2 (en) * | 2001-01-25 | 2005-05-10 | Dphi Acquisitions, Inc. | Tracking and focus servo system with automatic media type detector |
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US6882603B2 (en) * | 2001-01-25 | 2005-04-19 | Dphi Acquisitions, Inc. | Digital tracking servo system with tracking skate detection |
US6809995B2 (en) | 2001-01-25 | 2004-10-26 | Dphi Acquisitions, Inc. | Digital focus and tracking servo system |
US7522480B2 (en) | 2001-01-25 | 2009-04-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with an acceleration clamp |
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US7680004B2 (en) * | 2001-01-25 | 2010-03-16 | Dphi Acquisitions, Inc. | Digital servo system with inverse non-linearity compensation |
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US6922380B2 (en) | 2001-01-25 | 2005-07-26 | Dphi Acquisitions, Inc. | Tracking and focus servo system with anti-skate algorithm |
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US6762980B2 (en) | 2001-01-25 | 2004-07-13 | Dphi Acquisitions, Inc. | Digital tracking servo system with a multi-track seeking and accelerated servo function for regaining a closed tracking loop |
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US7260031B2 (en) | 2001-01-25 | 2007-08-21 | Dphi Acquisitions, Inc. | Digital focus and tracking servo system with one-track jump |
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US6958957B2 (en) * | 2001-01-25 | 2005-10-25 | Dphi Acquisitions, Inc. | Digital tracking and focus servo system with TES to FES crosstalk calibration |
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PT1597728E (pt) | 2003-02-20 | 2012-05-07 | Koninkl Philips Electronics Nv | Suporte de informações que compreende informações de acesso e informações fictícias e o aparelho de reprodução correspondente |
EP1597727B1 (en) * | 2003-02-20 | 2011-12-28 | Koninklijke Philips Electronics N.V. | Information carrier comprising access information |
EP1486957A1 (de) * | 2003-06-12 | 2004-12-15 | Maiworm & Dr. Bosien Grundstücks GbR | Datenträger des beschreibbaren, optisch auslesbaren Typs mit einer Servospur und Verfahren zur Herstellung der Servospur |
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US3946367A (en) * | 1972-12-20 | 1976-03-23 | Videonics Of Hawaii, Inc. | Three dimensional electro-optical retrieval system |
JPS5415727B2 (ja) * | 1973-02-02 | 1979-06-16 | ||
US4027330A (en) * | 1973-03-27 | 1977-05-31 | Ted-Bildplatten Aktiengesellschaft, Aeg-Telefunken, Teldec | Disc recording |
US3891829A (en) * | 1973-08-29 | 1975-06-24 | Monarch Marking Systems Inc | Coded records, method of making same and method and an apparatus for reading coded records |
NL7314267A (nl) * | 1973-10-17 | 1975-04-21 | Philips Nv | Registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur. |
US3931460A (en) * | 1974-02-04 | 1976-01-06 | Zenith Radio Corporation | Video disc with multiturn undulating storage track |
NL7402012A (nl) * | 1974-02-14 | 1975-08-18 | Philips Nv | Registratiedrager waarop informatie is aange- bracht in een optisch uitleesbare struktuur. |
NL7412634A (nl) * | 1974-09-25 | 1976-03-29 | Philips Nv | Registratiedrager voor een televisiesignaal. |
NL7413044A (nl) * | 1974-10-03 | 1976-04-06 | Philips Nv | Registratiedrager waarop een televisiesignaal is opgeslagen. |
JPS6011374B2 (ja) * | 1975-02-05 | 1985-03-25 | 株式会社日立製作所 | 情報再生方法及びその装置 |
DE2522405C2 (de) * | 1975-05-21 | 1982-04-15 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information |
US4094013A (en) * | 1975-05-22 | 1978-06-06 | U.S. Philips Corporation | Optical storage disk system with disk track guide sectors |
JPS5817969B2 (ja) * | 1975-06-30 | 1983-04-11 | 株式会社北辰電機製作所 | コウガクシンゴウキロクサイセイホウシキ |
DE2529478A1 (de) * | 1975-07-02 | 1977-01-27 | Ted Bildplatten | Verfahren und vorrichtung zum aufzeichnen von informationen mittels laser- oder dergleichen strahlen |
GB1577133A (en) * | 1976-03-19 | 1980-10-22 | Rca Corp | Video information record and playback apparatus |
GB1585546A (en) * | 1976-04-08 | 1981-03-04 | Victor Company Of Japan | Information signal recording system |
GB1570799A (en) * | 1977-01-28 | 1980-07-09 | Jacobs E | Binary coded digital optical record |
US4839882A (en) * | 1977-11-21 | 1989-06-13 | U. S. Philips Corporation | Record carrier with an optically readable trackwise-arranged information structure |
NL187413C (nl) * | 1978-03-16 | 1991-09-16 | Philips Nv | Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager. |
JPS583297B2 (ja) * | 1978-06-09 | 1983-01-20 | 株式会社日立製作所 | 情報記録再生方法,その装置およびその記録媒体 |
NL7811003A (nl) * | 1978-11-06 | 1980-05-08 | Philips Nv | Schijfvormige, optisch uitleesbare registratiedrager, als opslagmedium voor data-informatie. |
US4229808A (en) * | 1978-12-21 | 1980-10-21 | Ncr Corporation | Method for recording multiple data segments on a storage disc with eccentricity factor |
JPS55113175A (en) * | 1979-02-23 | 1980-09-01 | Victor Co Of Japan Ltd | Information signal recording medium and its recording system |
US4290122A (en) * | 1979-05-14 | 1981-09-15 | Xerox Corporation | Self-synchronizing clock source for optical memories |
NL8000121A (nl) * | 1980-01-09 | 1981-08-03 | Philips Nv | Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager. |
NL8000123A (nl) * | 1980-01-09 | 1981-08-03 | Philips Nv | Inrichting voor het schrijven van digitale informatie in een schijfvormige optisch uitleesbare registratiedrager. |
US4392819A (en) * | 1980-02-22 | 1983-07-12 | Ahn Byorg R | Preliminary heating apparatus for torch lamp |
-
1980
- 1980-01-09 NL NL8000121A patent/NL8000121A/nl not_active Application Discontinuation
- 1980-12-22 ZA ZA00807999A patent/ZA807999B/xx unknown
- 1980-12-30 AR AR283842A patent/AR232053A1/es active
-
1981
- 1981-01-05 MX MX185466A patent/MX150987A/es unknown
- 1981-01-05 GB GB8100124A patent/GB2069219B/en not_active Expired
- 1981-01-05 SE SE8100021A patent/SE447768B/sv not_active IP Right Cessation
- 1981-01-06 NZ NZ195974A patent/NZ195974A/en unknown
- 1981-01-06 CH CH34/81A patent/CH675499A5/de not_active IP Right Cessation
- 1981-01-06 DK DK003481A patent/DK151420C/da not_active IP Right Cessation
- 1981-01-06 BR BR8100042A patent/BR8100042A/pt not_active IP Right Cessation
- 1981-01-06 IT IT8119018A patent/IT1210972B/it active
- 1981-01-06 DD DD81226849A patent/DD160624A5/de unknown
- 1981-01-06 AU AU65993/81A patent/AU542656B2/en not_active Expired
- 1981-01-07 BE BE0/203422A patent/BE886992A/fr not_active IP Right Cessation
- 1981-01-07 ES ES498344A patent/ES8201756A1/es not_active Expired
- 1981-01-07 FR FR8100148A patent/FR2473769B1/fr not_active Expired
- 1981-01-07 CA CA000368010A patent/CA1157945A/en not_active Expired
- 1981-01-09 DE DE3153674A patent/DE3153674C2/de not_active Expired - Lifetime
- 1981-01-09 AT AT0005881A patent/AT369916B/de not_active IP Right Cessation
- 1981-01-09 JP JP128381A patent/JPS56105343A/ja active Granted
- 1981-01-09 DE DE19813100421 patent/DE3100421A1/de active Granted
-
1982
- 1982-11-11 DD DD82244789A patent/DD203789A5/de unknown
-
1984
- 1984-02-07 SG SG106/84A patent/SG10684G/en unknown
- 1984-06-07 HK HK479/84A patent/HK47984A/xx not_active IP Right Cessation
-
1989
- 1989-01-17 US US07/224,085 patent/US4972401A/en not_active Expired - Lifetime
- 1989-07-25 US US08/375,620 patent/US5682365A/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PFA | Name/firm changed |
Owner name: PHILIPS ELECTRONICS N.V. |
|
PFA | Name/firm changed |
Owner name: PHILIPS ELECTRONICS N.V. TRANSFER- KONINKLIJKE PHI |
|
PL | Patent ceased |